Who is banker Tom "Rain Man" Hayes? He's at the center of a tug of war between the U.S. and the U.K., who each want to prosecute him over the Libor scandal. David Enrich reports. Photo: Getty Images.

This transcript has been automatically generated and may not be 100% accurate.

... I ... me ... all of ... the Atlantic ... by overall morning welcome to markets of mine Paul vignette ... interesting story today about the trader known as the rain analyst love these colorful names of these guys right ... trader known as the rain and we make about David Enrich joins us from London to talk about this one ... by David ... was Autonomy's wise import ... Tom Hayes is the guy who regulators say is the centerpiece of the entire live or scandal ... he's a former UBS and Citigroup traders ... who was arrested in December by British ... law enforcement ... is charged to ... a day later in fact by American law enforcement ... and he's the guy who allegedly it was in the center of all these attempts by numerous banks and interdealer brokers ... to re a bit of ... variation of life or to get the Japanese yen for July for breath and ... I he said he was struck by the U K authorities did U S authorities ... but I mean that doesn't even begin to explain what's going on with these guys is ... they both wanted him up over jockeying for him right ... yet there's an enormous tug of war going on behind the scenes between the U S Justice Department on the one hand and a U K is serious fraud office on the other and ... that does is permanent investigate and this guy for a few years back to late last year ... they informed the SFO they want to come to interview ... Thomas's British human furnace of London that I'm ... and that the SFO to this extraordinary seven saying no we're not going to give you access to him ... instead it Ayatollah a week or two later the SFO early in the morning of December eleven ... I rested on a is and that ... that basically blocks to the effect of blocking the US are likely block of us never again their hands on them the next day December twelve the U S filed criminal charges against gays ... in court in New York but ... was busily very limited it I possibility this point of view is ever going to get their hands on them and there's ... just for people have ... the view that the time is most likely will never see the inside of an American courtroom ... ASIC huge blow to the US whose which is ... touted as one of the two people who's been criminally charged in the live or scandal ... he's the guy is by far the most senior person and ... the Justice Department and other American authorities have extended a lot of time and money ... and just political capital really emphasizing the importance of this ... innocent relative Tom Hayes to Lima Read and now looks like they're never going to actually get their hands up perhaps because in the UK there's a statue that double jeopardy statute to the starting in the UK ... Sun likely they would allow him to then be charged internationally right ... right so what if the double jeopardy works in two ways the first way is that ... if his words went to the US was extradited to the US and was charger struck a deal ... with the Americans under UK double jeopardy laws ... the U K would then not build a prosecutor for the same crimes and conversely if he strikes a deal with the British authorities ... of regardless of this what the deal means the punishment ... under UK law the keys know can not allowed to be extradited to the US ... to seek similar charges there so ... the UK place seems to be that they're going to strike a deal some sort of deal with a is ... maybe and legal experts here say the top prize serve at least a year or two in jail here ... but that would have the effect of essentially ... getting them off the hook ... for any crimes that the U S authorities alleged that he committed to he would